Electronic device, character input module and method for selecting characters thereof

A method for selecting characters, comprising:

• sensing a first touch on a first key;
• displaying a plurality of characters and highlighting a first character of said plurality of characters on a display unit in response to said first touch;
• sensing at least one shifting motion of said first touch on said first key, wherein the at least one shifting motion shifts at a direction;
• selecting a second character of said plurality of characters in response to said at least one shifting motion;
• sensing a second touch on a second key;
• determining a preselected character for said second key according to said selected second character;
• and
• highlighting said preselected character, which is of the same category as said selected second character but is not of the same category as said first character, on said display unit in response to said second key.